Home / 286,634.58-429,961.59-76,272.72

Finding the Fourth Proportional to 286,634.58, 429,961.59 and 76,272.72

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Solution

The fourth proportional to 286,634.58, 429,961.59 and 76,272.72 is: 114,411.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,634.58 : 429,961.59 = 76,272.72 : x
  2. Step 2: Convert to fraction form
    286,634.58/429,961.59 = 76,272.72/x
  3. Step 3: Cross multiply
    286,634.58x = 429,961.59 × 76,272.72
  4. Step 4: Simplify right side
    286,634.58x = 32,794,339,964.82
  5. Step 5: Solve for x
    x = 32,794,339,964.82/286,634.58
  6. Step 6: Final answer
    x = 114,411.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.